The Taranis outpost was former colony of the Lanteans on the planet Taranis. During the War with the Wraith, Taranis served as a drydock for the Ancient fleet, with one ship, the Hippaforalkus, being left behind after the Lanteans fled back to Earth. Eventually, Taranis was repopulated by humans, who began to study the Lantean technology left behind, and used the shield to protect themselves from the Wraith. Unfortunately, the Taranians kept the shield constantly active at full strength after they learned the Wraith had left their hibernation cycle prematurely. This caused the heat and pressure inside the supervolcano to build to the point that it became active again and was about to erupt when the Atlantis expedition discovered the outpost one year later. The resulting explosion destroyed the outpost, most of the continent the outpost was on, and rendered the planet uninhabitable for centuries which ultimately forced the Taranis to be relocated elsewhere.(SGA: "Inferno")